Mnet's "M! Countdown" is back with another episode of great performances and musical treats. Besides the usual stages, INFINITE, TEEN TOP, and Witches made their respective comebacks while BoM debuted. Elsewhere, ZE:A, Boyfriend, and Min Kyung Hoon begun follow-up promotions. It was a hot battle between MBLAQ, T-ara and miss A for the #1 spot on "M! Countdown" today, but in the end, it was miss A who got the first win for their comeback track "Good Bye Baby"! Congratulations to miss A! [gallery] === Other performers included HyunA, Jang Woo Hyuk (goodbye stage), CSJH - Dana & Sunday, Homme, GP Basic, J.ae, and CHI CHI. ===